1/8
September 2002
s
ENCODES 10 LINE TO 4 LINE BCD
s
ACTIVE LOW INPUTS AND OUTPUTS
s
STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERIZATION
s
QUIESCENT CURRENT SPECIFIED UP TO
20V
s
5V, 10V AND 15V PARAMETRIC RATINGS
s
MAXIMUM INPUT CURRENT OF 1 A AT
18V OVER FULL PACKAGE TEMPERATURE
RANGE; 100 nA AT 18 V AND 25C
s
NOISE MARGIN (FULL PACKAGE
TEMPERATURE RANGE): 1V AT V
DD
=5V,
2V AT V
DD
=10V, 2.5V AT V
DD
= 15V
s
INPUT LEAKAGE CURRENT
I
I
= 100nA (MAX) AT V
DD
= 18V T
A
= 25C
s
100% TESTED FOR QUIESCENT CURRENT
s
MEETS ALL REQUIREMENTS OF JEDEC
JESD13B "STANDARD SPECIFICATIONS
FOR DESCRIPTION OF B SERIES CMOS
DEVICES"
DESCRIPTION
HCF40147B is a monolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
HCF40147B, encoder CMOS, features priority
encoding of the inputs to ensure that only the
highest order data line is encoded. Ten data input
lines (0-9) are encoded to four line (8, 4, 2, 1)
BCDs. The highest priority line is line 9. All four
output lines are logic "1" (V
SS
) when all input lines
are logic "0". All inputs and outputs are buffered,
and each output can drive one TTL Low Power
Schottky load. HCF40147B is functionally similar
to the T54/T74LS147 if pin 15 is tied low.
HCF40147B is supplied in 16-lead plastic or
ceramic and plastic micropackages.
HCF40147B
10 TO 4 LINE BCD PRIORITY ENCODER
PIN CONNECTION
ORDER CODES
PACKAGE
TUBE
T & R
DIP
HCF40147BEY
SOP
HCF40147BM1
HCF40147M013TR
DIP
SOP
HCF40147B
2/8
IINPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE
X : Don't Care
PIN No
SYMBOL
NAME AND FUNCTION
9, 7, 6, 14
A to D
BCD Address Outputs
(Active LOW)
11, 12, 13, 1,
2, 3, 4, 5, 10
1 to 9
Decimal data Inputs
(Active LOW)
15
0
Not Connected
8
V
SS
Negative Supply Voltage
16
V
DD
Positive Supply Voltage
INPUT
OUTPUTS
0
1
2
3
4
5
6
7
8
9
D
C
B
A
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
X
H
L
L
L
L
L
L
L
L
L
L
L
H
X
X
H
L
L
L
L
L
L
L
L
L
H
L
X
X
X
H
L
L
L
L
L
L
L
L
H
H
X
X
X
X
H
L
L
L
L
L
L
H
L
L
X
X
X
X
X
H
L
L
L
L
L
H
L
H
X
X
X
X
X
X
H
L
L
L
L
H
H
L
X
X
X
X
X
X
X
H
L
L
L
H
H
H
X
X
X
X
X
X
X
X
H
L
H
L
L
L
X
X
X
X
X
X
X
X
X
H
H
L
L
H
HCF40147B
3/8
LOGIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to V
SS
pin voltage.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage
-0.5 to +22
V
V
I
DC Input Voltage
-0.5 to V
DD
+ 0.5
V
I
I
DC Input Current
10
mA
P
D
Power Dissipation per Package
200
mW
Power Dissipation per Output Transistor
100
mW
T
op
Operating Temperature
-55 to +125
C
T
stg
Storage Temperature
-65 to +150
C
Symbol
Parameter
Value
Unit
V
DD
Supply Voltage
3 to 20
V
V
I
Input Voltage
0 to V
DD
V
T
op
Operating Temperature
-55 to 125
C
HCF40147B
4/8
DC SPECIFICATIONS
The Noise Margin for both "1" and "0" level is: 1V min. with V
DD
=5V, 2V min. with V
DD
=10V, 2.5V min. with V
DD
=15V
DYNAMIC ELECTRICAL CHARACTERISTICS (T
amb
= 25C, C
L
= 50pF, R
L
= 200K
, t
r
= t
f
= 20 ns)
Symbol
Parameter
Test Condition
Value
Unit
V
I
(V)
V
O
(V)
|I
O
|
(
A)
V
DD
(V)
T
A
= 25C
-40 to 85C
-55 to 125C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
I
L
Quiescent Current
0/5
5
0.04
5
150
150
A
0/10
10
0.04
10
300
300
0/15
15
0.04
20
600
600
0/20
20
0.08
100
3000
3000
V
OH
High Level Output
Voltage
0/5
<1
5
4.95
4.95
4.95
V
0/10
<1
10
9.95
9.95
9.95
0/15
<1
15
14.95
14.95
14.95
V
OL
Low Level Output
Voltage
5/0
<1
5
0.05
0.05
0.05
V
10/0
<1
10
0.05
0.05
0.05
15/0
<1
15
0.05
0.05
0.05
V
IH
High Level Input
Voltage
0.5/4.5
<1
5
3.5
3.5
3.5
V
1/9
<1
10
7
7
7
1.5/13.5
<1
15
11
11
11
V
IL
Low Level Input
Voltage
4.5/0.5
<1
5
1.5
1.5
1.5
V
9/1
<1
10
3
3
3
13.5/1.5
<1
15
4
4
4
I
OH
Output Drive
Current
0/5
2.5
<1
5
-1.36
-3.2
-1.1
-1.1
mA
0/5
4.6
<1
5
-0.44
-1
-0.36
-0.36
0/10
9.5
<1
10
-1.1
-2.6
-0.9
-0.9
0/15
13.5
<1
15
-3.0
-6.8
-2.4
-2.4
I
OL
Output Sink
Current
0/5
0.4
<1
5
0.44
1
0.36
0.36
mA
0/10
0.5
<1
10
1.1
2.6
0.9
0.9
0/15
1.5
<1
15
3.0
6.8
2.4
2.4
I
I
Input Leakage
Current
0/18
Any Input
18
10
-5
0.1
1
1
A
C
I
Input Capacitance
Any Input
5
7.5
pF
Symbol
Parameter
Test Condition
Value (*)
Unit
V
DD
(V)
Min.
Typ.
Max.
t
PLH
t
PHL
Propagation Delay Time
In Phase Output
5
450
900
ns
10
200
400
15
150
300
t
PLH
t
PHL
Propagation Delay Time
Out Phase Output
5
425
850
ns
10
175
350
15
125
250
t
TLH
t
THL
Transition Time
5
100
200
ns
10
50
100
15
40
80
C
I
Input Capacitance
5
7.5
pF
HCF40147B
5/8
TEST CIRCUIT
C
L
= 50pF or equivalent (includes jig and probe capacitance)
R
L
= 200K
R
T
= Z
OUT
of pulse generator (typically 50
)
WAVEFORM : PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
HCF40147B
6/8
DIM.
mm.
inch
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
a1
0.51
0.020
B
0.77
1.65
0.030
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
17.78
0.700
F
7.1
0.280
I
5.1
0.201
L
3.3
0.130
Z
1.27
0.050
Plastic DIP-16 (0.25) MECHANICAL DATA
P001C
HCF40147B
7/8
DIM.
mm.
inch
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
1.75
0.068
a1
0.1
0.2
0.003
0.007
a2
1.65
0.064
b
0.35
0.46
0.013
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.019
c1
45 (typ.)
D
9.8
10
0.385
0.393
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
8.89
0.350
F
3.8
4.0
0.149
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.019
0.050
M
0.62
0.024
S
(max.)
SO-16 MECHANICAL DATA
PO13H
8
HCF40147B
8/8
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consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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